Circular rib-knitting machine



2 Sheets-Sheet 1 mi r53- T. c. BROMLEY ET AL CIRCULAR RIB KNITTING MACHINE Filed Au /1o; 192i l|||||||||||||| In July 1%, 19 23.

o m iL xl-l I 1,461,693 T. C. BROMLEY ET AL CIRCULAR RIB KNITTING MACHINE July 1 0, 1923.

Filed Aug. 10. 1921 2 Sheets-Sheet 2' Innii Patented duly 1Q, 1923.

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THOMAS CHARLESBRQMLEY AND WTALTEB CAV ERS 033 LEICESTER, ENGLAND, AS- SIGNORS TO'MELLOR BROMLEY & CO. LIMITED, 0F MINOTAUR WORKS, LEICESTER,

ENGLAND.

oriicutan RIB-KNITTING MACHINE.

Application filed august 1c, 1921 Serial No. 491,112.

To all whom it may concern: I I

Be it known that we, THOMAS Crinnnns BROMLEY and WALTER. CAvEns, both subjects of the King of Great Britain, residing at Leicester, in the countyof Leicester, England, have invented newand useful lmprovements in or Relatingto Circular Bib- Knitting Machines, of which the follow ng 11 is a specification. I I.

This invention relates to c rcular rib.

knitting machines andconcerns more especially those of the type wherein the needle cylinder and dial rotate. The object of the invention is to prov1de in such machines improved means for driving the dial and maintainingproper corelation betweendial and cylinder needles-with possibility of adjustment. An important feature of the present invention is a constructionof the dial driving means which enables thedial and associated parts to be raised above-the needle cylinder from operative position such as for allew ng clear access to the cylinder. The upward and downward movementof-the dial from and to its working position takes place without disturbing the circumferential co-relation of the dial and cylinder needles as will be hereinafter explained.

According to the invention-"the.- dial is movable up and down on a central sp ndle and is rotated by a vertical rod which passes slidably through a rotatable, frame carried by the said spindle and located within the'needle cylinder, said frame being driven by the contact therewith of dogs'on the inside of the cylinder. Y

A plurality of driving dogs are provided i and in order to ensure the proper contact of each dog with the driven rotating frame, the latter is furnished with adjustable rollers, thetubularfabric passing down between said dogsand rollers. I 7

To enable the inventionto be clearly and readily understood, a convenient practical embodiment of the same is illustrated in the accompanying drawings wherein I Figure 1 is a vertical-sectionof the upper part of a circular multiple feeder rib knit ting machine provided with the-improved dial arrangement.

Figure 2 is a sectional line a-a of Figure 1. I

Figures 3 and 4: (drawn toa larger scale) by a nut 14 thereon.

plan taken on the show alternative forms of the adjustable rollers on the driven frame.

Throughout the drawings like parts are designated by tl Referringto Figure 1, the bed-of the machine is represented at 1 having a suitable recess. in which is rotatably mounteda car rier wheel 2 to which the needle cylinder 3 is attached,sthe carrier wheel beingdriven by a, bevel wheel 4 atthe driving shaft 5. Thisis the usual practice and forms no part of the present invention which concerns the now be described.

e same reference characters.

- mounting and driving of the dial 6 as will A vertical spindle -7is supported in a sta I tionary manner by a suitable overhead struc' ture 8 carried by uprights 9 situated on opposite sidesofthe machine and attached in a rigid mannerto the bedl. f The spindle 7 rearranged coincident with the vertical axis of the needle cylinder 3 and dial 6 and has; a screw threaded upper part 10. The spindle is held against rotation by any suitable means and/its lower enddependswithin the needle cylinder and has rotatably mounted, i

thereon a spider or frame 11 having, as shown in. FigureQ, radial arms 12 which terminate near the inside wall of the needle cylinderS. W i

Each arm 12 at'its outer end is, according to one arrangement, fitted with a horizontally disposed eccentric stud 18 (see Fig.-

ure capable ofbeing rotated for adjustmentpurposes and adapted normed, integrally w th and eccentric'ally on each stud 13 is a head or part 15 on which is mounted a roller 16 with which a corresponding lug or dog 17 projecting from the innerface of the cylinder 3 as shown in Figures-1 and 2 makes contact for driving the frame 11. By rotation of the stud any of the rollers may be adjusted in relation to its driving dog.

According to an alternativearrangement, the roller 16 is mounted upon a concentric stud B -(Figure 4) capable of lateral adjustment by means of'a set-screw 12 in a hole 12 inthe arm 12, said'hole being larger than the stud and the latterbeing fastened in position by a nut 14. in this case any of the rollers may be set up to its driving dog by adjusting the stud 1'3.

.Movable up and down on the central spindle 7 is a sleeve 18 (nigure 1) attached to to be fastened a transverse support 19 in a suitable manner so as to be held hem rotation. @On the lower part of thissleeye a hub'cQO is mounted to rotate and is kept in position by a screwed lock ring 21L. The dial :6 iswsecured in a suitable manner to the said huh and rotates with same." Above the dial 6, the dial cam cap 22 is attached by suitable nieans an annular flange 23 on the sleeve 18 so as to remain stationary with the sleeve which, it

will be understood, is held from rotation by the support the ends O-ffWlrlC-h are at tached to bracket-s 24L capable of sliding movement up and down the beiore mentioneduprights to which they may be clamped by ineans of 'sc rews25. The uprights 9 are slotted vertically at 26 to can I able the screws to move up and down with the brackets 24; The bottom position oi the brackets is determined by adjustable screws SP) the uprights 9 which screws *enable the zero point or working; height oithe diail' to' be regulated in relationtothe-needle vertical-spindle h 28 o f'whieh is internally threaded to the cylinder. 7 1

Working upon the screwed part of the Z isa handwheel Q'Y-the boss said screwed part and move up =and*down*on same when rotated thereon. The boss 28 "is also grooved circum lierentiallyand engaged supporti1 9. When thescrewsfidare slacken'ed-ia nd "the handwhe'el is rotated-to move which bymea ns-of the sleeve 18 lifts th dial (S-and its cap "22 from th'e work-ing position'. 1 mins manner the said'dia l andassoci'ated pa r-ts i'nay be raisedclear above-"the needle cylinder '8 when required 'as indicated by the dotted lines without disturbing the driven spider or fra ine' ll w'hichremains in its Working-positiononthe lower end of the spindle "7. fastened in its raised position and 'also in the lower working position by'tightening, the clamp screws 25.

- In order to trans1n1t-the drive from "the driven vframe 131 to the clial dtthe rotatable hub which carries said dial has firmly secured to its underside a downwardly pro jecting rod or ifinger 30 (Figures 1 This rod passes down through an opening 31 foi'wned through theou'ter endof-an arm' 32011 the frame ll'which arm has on oppo cite sides of the opening a set-screw '88. The set-screws are-arranged to make contact 7 wi'th the rod 30 in "the direct line of the drive the opening being made larger than the'rod so-that the latter can have a certain amount of 'adjustment relatively to the arm 33, effected by lthe set-screws, for the pur pose of obtaining :and "maintaining the proper circumferential relationship between the dial needles 3e and'cy linder needles 35.

When the dial 6 :and associated parts are The support may be raised and lowered in the aforesaid manner by rotation otthe handwheel 27, the rod or finger 30 moves up and down through the opening 310i the arm 32 Without disturbthe cincumter-ential oo-(relation oil? the needles. The tubular knitted fabric passes down between the rollers 16 and their driv- V vin g dogs 17; 1 I One advantage-obtained by the arrangemen-t herein described is that when the dial is raised and held in" its highest position,

to take place upon the cylinder needles only until all these needles have loops thereon and :good fabric is being made. "The-- dial may then" be lowered-to working posit-ion thus avoiding bad 'lr-nitting at commence" the machine can he turned to cause-knitting I ment which is comnionfte other methods of 1 Fanning on.

What wecla m then 1s:1 i I, 1. in 'a circular rib knitting machine, in

combination, a rotary needle cylinder, a

fined spindle "coincident with the axisofisaid cylinder, a dial rotatably mounted u on said spindle and movable up and [down thereon-, la "rotary frame carried by said sp'i-ndle' and situated within the needle cylinder, dogs on =thefins ide of -'s'a-i'd cylinder to drive said frame, and aired fixed to and projecting from the-dial iandpassi-ng *s lidahly' through' theiotary name to transmit 'i-ot'ation from the latter to the dial,

2. In 'a circular 'ribknit 'ting rnachin'e, in

combination, a rotary needle cylinder, a fixed spindle coincident with the unw se-e cylinderfa dialrotatabl ymounted upon said I spindle and "mo'va'ible' up :and "down thereon,

a rotary -1"=rame'carr'ied"by said spindle and situated within the "needle cylinder, adj net-1 able rollers on the frame,*do'gs on the inside of the 'needlecylinder for contaet -withthe rollers to dri e'ythe frame,v anda rod fixed to" and projecting from the dialiand passing slidably'through the rdtary frame' to transniit rotation from 'the flatter to the dial.- 7

l l '8. 'a circular rib knitting nia'chine, in combination, a "rotary'needle cylinder, needles therein, a hired spindle coincident with the axis 0'1? said cylinder, 'ia dial' rotata'bly mounted -upon*-said' spindle' and ineva'ble up 5and-down thereon, needles in said dial, a rotary frame carried 'by ,saidspindle and situatedwithin the needle cylinder,

dogs on the inside ofsaidxcylinderto-drive said frame, a; rodlixed to and projecting from the dial and passing'sli'dably I through the rotary Sframe *to transniit rotation from the latter to ith'e "dial, and means to adjust wheel'connected to said support and mov able by rotation up and down the screw threaded spindle, a dial rotatably carried by said support, a rotarysframe mounted upon said spindle and situated within the needle cylinder, dogs on the inside of said cylinder to drive said frame, a rod fixed to and projecting from the dial and passing slidably through the rotary frame to transmit rotation from the latter to the dial, and means to adjust the rod in the rotary frame for the purpose described.

5. In a circular rib knitting machine, in combination, a rotary needl cylinder, a

' screw threaded spindle arranged coincident With the axis of said cylinder, a structure to support said spindle in a stationary manner, a transverse support movable up and down the screw threaded spindle and engaging the said. structure at each end, a handwheel fitting said screw threaded spindle and connected to the transverse support to raise and lower same when rotated on the spindle, a sleeve movable up and down the spindle and attached to the transverse support, a flange on said sleeve, a dial cam cap attached to said flange, a hub rotatably mounted on said sleeve, a dial attached to said hub, an armed frame rotatably mounted on the spindle and situated within the needle cylinder, adjustable rollers on said frame, dogs on the inside of the needle cylinder to make contact with therollers for driving the frame,

a rod attached to and projecting from the aforesaid dial said rod passing through an arm on the rotary frame, and screws in said arm to adjust the rod in position in the rotary frame.

In testimony whereof we have signed our names to this specification.

THOMAS CHARLES BROMLEY. WALTER CAVERS. 

